- We just broke the dragon's cardinal rule.
- What? Never wear brown shoes with a blue suit?
- No, you moron. Never help a human.

— Cornwall (Don Rickles), Devon (Eric Idle)

9 seconds sound clip from the Quest for Camelot (1998) movie soundboard.

You can hear this line at 00:42:44.443 in the Blu-ray version of the movie.

Quote context

[...]

- Well, the good news is we're out of dragon country.

- The better news is, this is where we say goodbye.

- But, you can't leave us here.

- If we try to go back we'll be banished, ostracized, exiled.

- Not to mention kicked out.

- Why?

- We just broke the dragon's cardinal rule.

- What? Never wear brown shoes with a blue suit?

- No, you moron. Never help a human.

(FALCON SQUAWKING)

- Come on, Kayley. We must make camp before dark.

- Camp?

- Garrett, let's take them with us. Please.

- Oh, I suppose so.

[...]